/**
 * 微信小程序JavaScriptSDK
 * 
 * @version 1.2
 * @date 2019-03-06
 */

var ERROR_CONF = {
   KEY_ERR: 311,
   KEY_ERR_MSG: 'key格式错误',
   PARAM_ERR: 310,
   PARAM_ERR_MSG: '请求参数信息有误',
   SYSTEM_ERR: 600,
   SYSTEM_ERR_MSG: '系统错误',
   WX_ERR_CODE: 1000,
   WX_OK_CODE: 200
};
var BASE_URL = 'https://apis.map.qq.com/ws/';
var URL_SEARCH = BASE_URL + 'place/v1/search';
var URL_SUGGESTION = BASE_URL + 'place/v1/suggestion';
var URL_GET_GEOCODER = BASE_URL + 'geocoder/v1/';
var URL_CITY_LIST = BASE_URL + 'district/v1/list';
var URL_AREA_LIST = BASE_URL + 'district/v1/getchildren';
var URL_DISTANCE = BASE_URL + 'distance/v1/';
var URL_DIRECTION = BASE_URL + 'direction/v1/';
var MODE = {
 driving: 'driving',
 transit: 'transit'
};
var EARTH_RADIUS = 6378136.49;
var Utils = {
 /**
 * md5加密方法
 * 版权所有©2011 Sebastian Tschan，https：//blueimp.net
 */
 safeAdd(x, y) {
   var lsw = (x & 0xffff) + (y & 0xffff);
   var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
   return (msw << 16) | (lsw & 0xffff);
 },
 bitRotateLeft(num, cnt) {
   return (num << cnt) | (num >>> (32 - cnt));
 },
 md5cmn(q, a, b, x, s, t) {
   return this.safeAdd(this.bitRotateLeft(this.safeAdd(this.safeAdd(a, q), this.safeAdd(x, t)), s), b);
 },
 md5ff(a, b, c, d, x, s, t) {
   return this.md5cmn((b & c) | (~b & d), a, b, x, s, t);
 },
 md5gg(a, b, c, d, x, s, t) {
   return this.md5cmn((b & d) | (c & ~d), a, b, x, s, t);
 },
 md5hh(a, b, c, d, x, s, t) {
   return this.md5cmn(b ^ c ^ d, a, b, x, s, t);
 },
 md5ii(a, b, c, d, x, s, t) {
   return this.md5cmn(c ^ (b | ~d), a, b, x, s, t);
 },
 binlMD5(x, len) {
   /* append padding */
   x[len >> 5] |= 0x80 << (len % 32);
   x[((len + 64) >>> 9 << 4) + 14] = len;

   var i;
   var olda;
   var oldb;
   var oldc;
   var oldd;
   var a = 1732584193;
   var b = -271733879;
   var c = -1732584194;
   var d = 271733878;

   for (i = 0; i < x.length; i += 16) {
     olda = a;
     oldb = b;
     oldc = c;
     oldd = d;

     a = this.md5ff(a, b, c, d, x[i], 7, -680876936);
     d = this.md5ff(d, a, b, c, x[i + 1], 12, -389564586);
     c = this.md5ff(c, d, a, b, x[i + 2], 17, 606105819);
     b = this.md5ff(b, c, d, a, x[i + 3], 22, -1044525330);
     a = this.md5ff(a, b, c, d, x[i + 4], 7, -176418897);
     d = this.md5ff(d, a, b, c, x[i + 5], 12, 1200080426);
     c = this.md5ff(c, d, a, b, x[i + 6], 17, -1473231341);
     b = this.md5ff(b, c, d, a, x[i + 7], 22, -45705983);
     a = this.md5ff(a, b, c, d, x[i + 8], 7, 1770035416);
     d = this.md5ff(d, a, b, c, x[i + 9], 12, -1958414417);
     c = this.md5ff(c, d, a, b, x[i + 10], 17, -42063);
     b = this.md5ff(b, c, d, a, x[i + 11], 22, -1990404162);
     a = this.md5ff(a, b, c, d, x[i + 12], 7, 1804603682);
     d = this.md5ff(d, a, b, c, x[i + 13], 12, -40341101);
     c = this.md5ff(c, d, a, b, x[i + 14], 17, -1502002290);
     b = this.md5ff(b, c, d, a, x[i + 15], 22, 1236535329);

     a = this.md5gg(a, b, c, d, x[i + 1], 5, -165796510);
     d = this.md5gg(d, a, b, c, x[i + 6], 9, -1069501632);
     c = this.md5gg(c, d, a, b, x[i + 11], 14, 643717713);
     b = this.md5gg(b, c, d, a, x[i], 20, -373897302);
     a = this.md5gg(a, b, c, d, x[i + 5], 5, -701558691);
     d = this.md5gg(d, a, b, c, x[i + 10], 9, 38016083);
     c = this.md5gg(c, d, a, b, x[i + 15], 14, -660478335);
     b = this.md5gg(b, c, d, a, x[i + 4], 20, -405537848);
     a = this.md5gg(a, b, c, d, x[i + 9], 5, 568446438);
     d = this.md5gg(d, a, b, c, x[i + 14], 9, -1019803690);
     c = this.md5gg(c, d, a, b, x[i + 3], 14, -187363961);
     b = this.md5gg(b, c, d, a, x[i + 8], 20, 1163531501);
     a = this.md5gg(a, b, c, d, x[i + 13], 5, -1444681467);
     d = this.md5gg(d, a, b, c, x[i + 2], 9, -51403784);
     c = this.md5gg(c, d, a, b, x[i + 7], 14, 1735328473);
     b = this.md5gg(b, c, d, a, x[i + 12], 20, -1926607734);

     a = this.md5hh(a, b, c, d, x[i + 5], 4, -378558);
     d = this.md5hh(d, a, b, c, x[i + 8], 11, -2022574463);
     c = this.md5hh(c, d, a, b, x[i + 11], 16, 1839030562);
     b = this.md5hh(b, c, d, a, x[i + 14], 23, -35309556);
     a = this.md5hh(a, b, c, d, x[i + 1], 4, -1530992060);
     d = this.md5hh(d, a, b, c, x[i + 4], 11, 1272893353);
     c = this.md5hh(c, d, a, b, x[i + 7], 16, -155497632);
     b = this.md5hh(b, c, d, a, x[i + 10], 23, -1094730640);
     a = this.md5hh(a, b, c, d, x[i + 13], 4, 681279174);
     d = this.md5hh(d, a, b, c, x[i], 11, -358537222);
     c = this.md5hh(c, d, a, b, x[i + 3], 16, -722521979);
     b = this.md5hh(b, c, d, a, x[i + 6], 23, 76029189);
     a = this.md5hh(a, b, c, d, x[i + 9], 4, -640364487);
     d = this.md5hh(d, a, b, c, x[i + 12], 11, -421815835);
     c = this.md5hh(c, d, a, b, x[i + 15], 16, 530742520);
     b = this.md5hh(b, c, d, a, x[i + 2], 23, -995338651);

     a = this.md5ii(a, b, c, d, x[i], 6, -198630844);
     d = this.md5ii(d, a, b, c, x[i + 7], 10, 1126891415);
     c = this.md5ii(c, d, a, b, x[i + 14], 15, -1416354905);
     b = this.md5ii(b, c, d, a, x[i + 5], 21, -57434055);
     a = this.md5ii(a, b, c, d, x[i + 12], 6, 1700485571);
     d = this.md5ii(d, a, b, c, x[i + 3], 10, -1894986606);
     c = this.md5ii(c, d, a, b, x[i + 10], 15, -1051523);
     b = this.md5ii(b, c, d, a, x[i + 1], 21, -2054922799);
     a = this.md5ii(a, b, c, d, x[i + 8], 6, 1873313359);
     d = this.md5ii(d, a, b, c, x[i + 15], 10, -30611744);
     c = this.md5ii(c, d, a, b, x[i + 6], 15, -1560198380);
     b = this.md5ii(b, c, d, a, x[i + 13], 21, 1309151649);
     a = this.md5ii(a, b, c, d, x[i + 4], 6, -145523070);
     d = this.md5ii(d, a, b, c, x[i + 11], 10, -1120210379);
     c = this.md5ii(c, d, a, b, x[i + 2], 15, 718787259);
     b = this.md5ii(b, c, d, a, x[i + 9], 21, -343485551);

     a = this.safeAdd(a, olda);
     b = this.safeAdd(b, oldb);
     c = this.safeAdd(c, oldc);
     d = this.safeAdd(d, oldd);
   }
   return [a, b, c, d];
 },
 binl2rstr(input) {
   var i;
   var output = '';
   var length32 = input.length * 32;
   for (i = 0; i < length32; i += 8) {
     output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xff);
   }
   return output;
 },
 rstr2binl(input) {
   var i;
   var output = [];
   output[(input.length >> 2) - 1] = undefined;
   for (i = 0; i < output.length; i += 1) {
     output[i] = 0;
   }
   var length8 = input.length * 8;
   for (i = 0; i < length8; i += 8) {
     output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << (i % 32);
   }
   return output;
 },
 rstrMD5(s) {
   return this.binl2rstr(this.binlMD5(this.rstr2binl(s), s.length * 8));
 },
 rstrHMACMD5(key, data) {
   var i;
   var bkey = this.rstr2binl(key);
   var ipad = [];
   var opad = [];
   var hash;
   ipad[15] = opad[15] = undefined;
   if (bkey.length > 16) {
     bkey = this.binlMD5(bkey, key.length * 8);
   }
   for (i = 0; i < 16; i += 1) {
     ipad[i] = bkey[i] ^ 0x36363636;
     opad[i] = bkey[i] ^ 0x5c5c5c5c;
   }
   hash = this.binlMD5(ipad.concat(this.rstr2binl(data)), 512 + data.length * 8);
   return this.binl2rstr(this.binlMD5(opad.concat(hash), 512 + 128));
 },
 rstr2hex(input) {
   var hexTab = '0123456789abcdef';
   var output = '';
   var x;
   var i;
   for (i = 0; i < input.length; i += 1) {
     x = input.charCodeAt(i);
     output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f);
   }
   return output;
 },
 str2rstrUTF8(input) {
   return unescape(encodeURIComponent(input));
 },
 rawMD5(s) {
   return this.rstrMD5(this.str2rstrUTF8(s));
 },
 hexMD5(s) {
   return this.rstr2hex(this.rawMD5(s));
 },
 rawHMACMD5(k, d) {
   return this.rstrHMACMD5(this.str2rstrUTF8(k), str2rstrUTF8(d));
 },
 hexHMACMD5(k, d) {
   return this.rstr2hex(this.rawHMACMD5(k, d));
 },

 md5(string, key, raw) {
   if (!key) {
     if (!raw) {
       return this.hexMD5(string);
     }
     return this.rawMD5(string);
   }
   if (!raw) {
     return this.hexHMACMD5(key, string);
   }
   return this.rawHMACMD5(key, string);
 },
 /**
  * 得到md5加密后的sig参数
  * @param {Object} requestParam 接口参数
  * @param {String} sk签名字符串
  * @param {String} featrue 方法名
  * @return 返回加密后的sig参数
  */
 getSig(requestParam, sk, feature, mode) {
   var sig = null;
   var requestArr = [];
   Object.keys(requestParam).sort().forEach(function(key){
     requestArr.push(key + '=' + requestParam[key]);
   });
   if (feature == 'search') {
     sig = '/ws/place/v1/search?' + requestArr.join('&') + sk;
   }
   if (feature == 'suggest') {
     sig = '/ws/place/v1/suggestion?' + requestArr.join('&') + sk;
   }
   if (feature == 'reverseGeocoder') {
     sig = '/ws/geocoder/v1/?' + requestArr.join('&') + sk;
   }
   if (feature == 'geocoder') {
     sig = '/ws/geocoder/v1/?' + requestArr.join('&') + sk;
   }
   if (feature == 'getCityList') {
     sig = '/ws/district/v1/list?' + requestArr.join('&') + sk;
   }
   if (feature == 'getDistrictByCityId') {
     sig = '/ws/district/v1/getchildren?' + requestArr.join('&') + sk;
   }
   if (feature == 'calculateDistance') {
     sig = '/ws/distance/v1/?' + requestArr.join('&') + sk;
   }
   if (feature == 'direction') {
     sig = '/ws/direction/v1/' + mode + '?' + requestArr.join('&') + sk;
   }
   sig = this.md5(sig);
   return sig;
 },
   /**
    * 得到终点query字符串
    * @param {Array|String} 检索数据
    */
   location2query(data) {
       if (typeof data == 'string') {
           return data;
       }
       var query = '';
       for (var i = 0; i < data.length; i++) {
           var d = data[i];
           if (!!query) {
               query += ';';
           }
           if (d.location) {
               query = query + d.location.lat + ',' + d.location.lng;
           }
           if (d.latitude && d.longitude) {
               query = query + d.latitude + ',' + d.longitude;
           }
       }
       return query;
   },

   /**
    * 计算角度
    */
   rad(d) {
     return d * Math.PI / 180.0;
   },  
   /**
    * 处理终点location数组
    * @return 返回终点数组
    */
   getEndLocation(location){
     var to = location.split(';');
     var endLocation = [];
     for (var i = 0; i < to.length; i++) {
       endLocation.push({
         lat: parseFloat(to[i].split(',')[0]),
         lng: parseFloat(to[i].split(',')[1])
       })
     }
     return endLocation;
   },

   /**
    * 计算两点间直线距离
    * @param a 表示纬度差
    * @param b 表示经度差
    * @return 返回的是距离，单位m
    */
   getDistance(latFrom, lngFrom, latTo, lngTo) {
     var radLatFrom = this.rad(latFrom);
     var radLatTo = this.rad(latTo);
     var a = radLatFrom - radLatTo;
     var b = this.rad(lngFrom) - this.rad(lngTo);
     var distance = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLatFrom) * Math.cos(radLatTo) * Math.pow(Math.sin(b / 2), 2)));
     distance = distance * EARTH_RADIUS;
     distance = Math.round(distance * 10000) / 10000;
     return parseFloat(distance.toFixed(0));
   },
   /**
    * 使用微信接口进行定位
    */
   getWXLocation(success, fail, complete) {
       wx.getLocation({
           type: 'gcj02',
           success: success,
           fail: fail,
           complete: complete
       });
   },

   /**
    * 获取location参数
    */
   getLocationParam(location) {
       if (typeof location == 'string') {
           var locationArr = location.split(',');
           if (locationArr.length === 2) {
               location = {
                   latitude: location.split(',')[0],
                   longitude: location.split(',')[1]
               };
           } else {
               location = {};
           }
       }
       return location;
   },

   /**
    * 回调函数默认处理
    */
   polyfillParam(param) {
       param.success = param.success || function () { };
       param.fail = param.fail || function () { };
       param.complete = param.complete || function () { };
   },

   /**
    * 验证param对应的key值是否为空
    * 
    * @param {Object} param 接口参数
    * @param {String} key 对应参数的key
    */
   checkParamKeyEmpty(param, key) {
       if (!param[key]) {
           var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + key +'参数格式有误');
           param.fail(errconf);
           param.complete(errconf);
           return true;
       }
       return false;
   },

   /**
    * 验证参数中是否存在检索词keyword
    * 
    * @param {Object} param 接口参数
    */
   checkKeyword(param){
       return !this.checkParamKeyEmpty(param, 'keyword');
   },

   /**
    * 验证location值
    * 
    * @param {Object} param 接口参数
    */
   checkLocation(param) {
       var location = this.getLocationParam(param.location);
       if (!location || !location.latitude || !location.longitude) {
           var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + ' location参数格式有误');
           param.fail(errconf);
           param.complete(errconf);
           return false;
       }
       return true;
   },

   /**
    * 构造错误数据结构
    * @param {Number} errCode 错误码
    * @param {Number} errMsg 错误描述
    */
   buildErrorConfig(errCode, errMsg) {
       return {
           status: errCode,
           message: errMsg
       };
   },

   /**
    * 
    * 数据处理函数
    * 根据传入参数不同处理不同数据
    * @param {String} feature 功能名称
    * search 地点搜索
    * suggest关键词提示
    * reverseGeocoder逆地址解析
    * geocoder地址解析
    * getCityList获取城市列表：父集
    * getDistrictByCityId获取区县列表：子集
    * calculateDistance距离计算
    * @param {Object} param 接口参数
    * @param {Object} data 数据
    */
   handleData(param,data,feature){
     if (feature == 'search') {
       var searchResult = data.data;
       var searchSimplify = [];
       for (var i = 0; i < searchResult.length; i++) {
         searchSimplify.push({
           id: searchResult[i].id || null,
           title: searchResult[i].title || null,
           latitude: searchResult[i].location && searchResult[i].location.lat || null,
           longitude: searchResult[i].location && searchResult[i].location.lng || null,
           address: searchResult[i].address || null,
           category: searchResult[i].category || null,
           tel: searchResult[i].tel || null,
           adcode: searchResult[i].ad_info && searchResult[i].ad_info.adcode || null,
           city: searchResult[i].ad_info && searchResult[i].ad_info.city || null,
           district: searchResult[i].ad_info && searchResult[i].ad_info.district || null,
           province: searchResult[i].ad_info && searchResult[i].ad_info.province || null
         })
       }
       param.success(data, {
         searchResult: searchResult,
         searchSimplify: searchSimplify
       })
     } else if (feature == 'suggest') {
       var suggestResult = data.data;
       var suggestSimplify = [];
       for (var i = 0; i < suggestResult.length; i++) {
         suggestSimplify.push({
           adcode: suggestResult[i].adcode || null,
           address: suggestResult[i].address || null,
           category: suggestResult[i].category || null,
           city: suggestResult[i].city || null,
           district: suggestResult[i].district || null,
           id: suggestResult[i].id || null,
           latitude: suggestResult[i].location && suggestResult[i].location.lat || null,
           longitude: suggestResult[i].location && suggestResult[i].location.lng || null,
           province: suggestResult[i].province || null,
           title: suggestResult[i].title || null,
           type: suggestResult[i].type || null
         })
       }
       param.success(data, {
         suggestResult: suggestResult,
         suggestSimplify: suggestSimplify
         })
     } else if (feature == 'reverseGeocoder') {
       var reverseGeocoderResult = data.result;
       var reverseGeocoderSimplify = {
         address: reverseGeocoderResult.address || null,
         latitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lat || null,
         longitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lng || null,
         adcode: reverseGeocoderResult.ad_info && reverseGeocoderResult.ad_info.adcode || null,
         city: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.city || null,
         district: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.district || null,
         nation: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.nation || null,
         province: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.province || null,
         street: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street || null,
         street_number: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street_number || null,
         recommend: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.recommend || null,
         rough: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.rough || null
       };
       if (reverseGeocoderResult.pois) {//判断是否返回周边poi
         var pois = reverseGeocoderResult.pois;
         var poisSimplify = [];
         for (var i = 0;i < pois.length;i++) {
           poisSimplify.push({
             id: pois[i].id || null,
             title: pois[i].title || null,
             latitude: pois[i].location && pois[i].location.lat || null,
             longitude: pois[i].location && pois[i].location.lng || null,
             address: pois[i].address || null,
             category: pois[i].category || null,
             adcode: pois[i].ad_info && pois[i].ad_info.adcode || null,
             city: pois[i].ad_info && pois[i].ad_info.city || null,
             district: pois[i].ad_info && pois[i].ad_info.district || null,
             province: pois[i].ad_info && pois[i].ad_info.province || null
           })
         }
         param.success(data,{
           reverseGeocoderResult: reverseGeocoderResult,
           reverseGeocoderSimplify: reverseGeocoderSimplify,
           pois: pois,
           poisSimplify: poisSimplify
         })
       } else {
         param.success(data, {
           reverseGeocoderResult: reverseGeocoderResult,
           reverseGeocoderSimplify: reverseGeocoderSimplify
         })
       }
     } else if (feature == 'geocoder') {
       var geocoderResult = data.result;
       var geocoderSimplify = {
         title: geocoderResult.title || null,
         latitude: geocoderResult.location && geocoderResult.location.lat || null,
         longitude: geocoderResult.location && geocoderResult.location.lng || null,
         adcode: geocoderResult.ad_info && geocoderResult.ad_info.adcode || null,
         province: geocoderResult.address_components && geocoderResult.address_components.province || null,
         city: geocoderResult.address_components && geocoderResult.address_components.city || null,
         district: geocoderResult.address_components && geocoderResult.address_components.district || null,
         street: geocoderResult.address_components && geocoderResult.address_components.street || null,
         street_number: geocoderResult.address_components && geocoderResult.address_components.street_number || null,
         level: geocoderResult.level || null
       };
       param.success(data,{
         geocoderResult: geocoderResult,
         geocoderSimplify: geocoderSimplify
       });
     } else if (feature == 'getCityList') {
       var provinceResult = data.result[0];
       var cityResult = data.result[1];
       var districtResult = data.result[2];
       param.success(data,{
         provinceResult: provinceResult,
         cityResult: cityResult,
         districtResult: districtResult
       });
     } else if (feature == 'getDistrictByCityId') {
       var districtByCity = data.result[0];
       param.success(data, districtByCity);
     } else if (feature == 'calculateDistance') {
       var calculateDistanceResult = data.result.elements;  
       var distance = [];
       for (var i = 0; i < calculateDistanceResult.length; i++){
         distance.push(calculateDistanceResult[i].distance);
       }   
       param.success(data, {
         calculateDistanceResult: calculateDistanceResult,
         distance: distance
         });
     } else if (feature == 'direction') {
       var direction = data.result.routes;
       param.success(data,direction);
     } else {
       param.success(data);
     }
   },

   /**
    * 构造微信请求参数，公共属性处理
    * 
    * @param {Object} param 接口参数
    * @param {Object} param 配置项
    * @param {String} feature 方法名
    */
   buildWxRequestConfig(param, options, feature) {
       var that = this;
       options.header = { "content-type": "application/json" };
       options.method = 'GET';
       options.success = function (res) {
           var data = res.data;
           if (data.status === 0) {
             that.handleData(param, data, feature);
           } else {
               param.fail(data);
           }
       };
       options.fail = function (res) {
           res.statusCode = ERROR_CONF.WX_ERR_CODE;
           param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
       };
       options.complete = function (res) {
           var statusCode = +res.statusCode;
           switch(statusCode) {
               case ERROR_CONF.WX_ERR_CODE: {
                   param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
                   break;
               }
               case ERROR_CONF.WX_OK_CODE: {
                   var data = res.data;
                   if (data.status === 0) {
                       param.complete(data);
                   } else {
                       param.complete(that.buildErrorConfig(data.status, data.message));
                   }
                   break;
               }
               default:{
                   param.complete(that.buildErrorConfig(ERROR_CONF.SYSTEM_ERR, ERROR_CONF.SYSTEM_ERR_MSG));
               }

           }
       };
       return options;
   },

   /**
    * 处理用户参数是否传入坐标进行不同的处理
    */
   locationProcess(param, locationsuccess, locationfail, locationcomplete) {
       var that = this;
       locationfail = locationfail || function (res) {
           res.statusCode = ERROR_CONF.WX_ERR_CODE;
           param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
       };
       locationcomplete = locationcomplete || function (res) {
           if (res.statusCode == ERROR_CONF.WX_ERR_CODE) {
               param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
           }
       };
       if (!param.location) {
           that.getWXLocation(locationsuccess, locationfail, locationcomplete);
       } else if (that.checkLocation(param)) {
           var location = Utils.getLocationParam(param.location);
           locationsuccess(location);
       }
   }
};


class QQMapWX {

   /**
    * 构造函数
    * 
    * @param {Object} options 接口参数,key 为必选参数
    */
   constructor(options) {
       if (!options.key) {
           throw Error('key值不能为空');
       }
       this.key = options.key;
   };

   /**
    * POI周边检索
    *
    * @param {Object} options 接口参数对象
    * 
    * 参数对象结构可以参考
    * @see http://lbs.qq.com/webservice_v1/guide-search.html
    */
   search(options) {
       var that = this;
       options = options || {};

       Utils.polyfillParam(options);

       if (!Utils.checkKeyword(options)) {
           return;
       }

       var requestParam = {
           keyword: options.keyword,
           orderby: options.orderby || '_distance',
           page_size: options.page_size || 10,
           page_index: options.page_index || 1,
           output: 'json',
           key: that.key
       };

       if (options.address_format) {
           requestParam.address_format = options.address_format;
       }

       if (options.filter) {
           requestParam.filter = options.filter;
       }

       var distance = options.distance || "1000";
       var auto_extend = options.auto_extend || 1;
       var region = null;
       var rectangle = null;

       //判断城市限定参数
       if (options.region) {
         region = options.region;
       }

       //矩形限定坐标(暂时只支持字符串格式)
       if (options.rectangle) {
         rectangle = options.rectangle;
       }

       var locationsuccess = function (result) {        
         if (region && !rectangle) {
           //城市限定参数拼接
           requestParam.boundary = "region(" + region + "," + auto_extend + "," + result.latitude + "," + result.longitude + ")";
           if (options.sig) {
             requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
           }
         } else if (rectangle && !region) {
           //矩形搜索
           requestParam.boundary = "rectangle(" + rectangle + ")";
           if (options.sig) {
             requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
           }
           } else {
             requestParam.boundary = "nearby(" + result.latitude + "," + result.longitude + "," + distance + "," + auto_extend + ")";
           if (options.sig) {
             requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
           }
           }            
           wx.request(Utils.buildWxRequestConfig(options, {
               url: URL_SEARCH,
               data: requestParam
           }, 'search'));
       };
       Utils.locationProcess(options, locationsuccess);
   };

   /**
    * sug模糊检索
    *
    * @param {Object} options 接口参数对象
    * 
    * 参数对象结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-suggestion.html
    */
   getSuggestion(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);

       if (!Utils.checkKeyword(options)) {
           return;
       }

       var requestParam = {
           keyword: options.keyword,
           region: options.region || '全国',
           region_fix: options.region_fix || 0,
           policy: options.policy || 0,
           page_size: options.page_size || 10,//控制显示条数
           page_index: options.page_index || 1,//控制页数
           get_subpois : options.get_subpois || 0,//返回子地点
           output: 'json',
           key: that.key
       };
       //长地址
       if (options.address_format) {
         requestParam.address_format = options.address_format;
       }
       //过滤
       if (options.filter) {
         requestParam.filter = options.filter;
       }
       //排序
       if (options.location) {
         var locationsuccess = function (result) {
           requestParam.location = result.latitude + ',' + result.longitude;
           if (options.sig) {
             requestParam.sig = Utils.getSig(requestParam, options.sig, 'suggest');
           }
           wx.request(Utils.buildWxRequestConfig(options, {
             url: URL_SUGGESTION,
             data: requestParam
           }, "suggest"));      
         };
         Utils.locationProcess(options, locationsuccess);
       } else {
         if (options.sig) {
           requestParam.sig = Utils.getSig(requestParam, options.sig, 'suggest');
         }
         wx.request(Utils.buildWxRequestConfig(options, {
           url: URL_SUGGESTION,
           data: requestParam
         }, "suggest"));      
       }        
   };

   /**
    * 逆地址解析
    *
    * @param {Object} options 接口参数对象
    * 
    * 请求参数结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-gcoder.html
    */
   reverseGeocoder(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);
       var requestParam = {
           coord_type: options.coord_type || 5,
           get_poi: options.get_poi || 0,
           output: 'json',
           key: that.key
       };
       if (options.poi_options) {
           requestParam.poi_options = options.poi_options
       }

       var locationsuccess = function (result) {
           requestParam.location = result.latitude + ',' + result.longitude;
         if (options.sig) {
           requestParam.sig = Utils.getSig(requestParam, options.sig, 'reverseGeocoder');
         }
           wx.request(Utils.buildWxRequestConfig(options, {
               url: URL_GET_GEOCODER,
               data: requestParam
           }, 'reverseGeocoder'));
       };
       Utils.locationProcess(options, locationsuccess);
   };

   /**
    * 地址解析
    *
    * @param {Object} options 接口参数对象
    * 
    * 请求参数结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-geocoder.html
    */
   geocoder(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);

       if (Utils.checkParamKeyEmpty(options, 'address')) {
           return;
       }

       var requestParam = {
           address: options.address,
           output: 'json',
           key: that.key
       };

       //城市限定
       if (options.region) {
         requestParam.region = options.region;
       }

       if (options.sig) {
         requestParam.sig = Utils.getSig(requestParam, options.sig, 'geocoder');
       }

       wx.request(Utils.buildWxRequestConfig(options, {
           url: URL_GET_GEOCODER,
           data: requestParam
       },'geocoder'));
   };


   /**
    * 获取城市列表
    *
    * @param {Object} options 接口参数对象
    * 
    * 请求参数结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-region.html
    */
   getCityList(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);
       var requestParam = {
           output: 'json',
           key: that.key
       };

       if (options.sig) {
         requestParam.sig = Utils.getSig(requestParam, options.sig, 'getCityList');
       }

       wx.request(Utils.buildWxRequestConfig(options, {
           url: URL_CITY_LIST,
           data: requestParam
       },'getCityList'));
   };

   /**
    * 获取对应城市ID的区县列表
    *
    * @param {Object} options 接口参数对象
    * 
    * 请求参数结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-region.html
    */
   getDistrictByCityId(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);

       if (Utils.checkParamKeyEmpty(options, 'id')) {
           return;
       }

       var requestParam = {
           id: options.id || '',
           output: 'json',
           key: that.key
       };

       if (options.sig) {
         requestParam.sig = Utils.getSig(requestParam, options.sig, 'getDistrictByCityId');
       }

       wx.request(Utils.buildWxRequestConfig(options, {
           url: URL_AREA_LIST,
           data: requestParam
       },'getDistrictByCityId'));
   };

   /**
    * 用于单起点到多终点的路线距离(非直线距离)计算：
    * 支持两种距离计算方式：步行和驾车。
    * 起点到终点最大限制直线距离10公里。
    *
    * 新增直线距离计算。
    * 
    * @param {Object} options 接口参数对象
    * 
    * 请求参数结构可以参考
    * http://lbs.qq.com/webservice_v1/guide-distance.html
    */
   calculateDistance(options) {
       var that = this;
       options = options || {};
       Utils.polyfillParam(options);

       if (Utils.checkParamKeyEmpty(options, 'to')) {
           return;
       }

       var requestParam = {
           mode: options.mode || 'walking',
           to: Utils.location2query(options.to),
           output: 'json',
           key: that.key
       };

       if (options.from) {
         options.location = options.from;
       }

       //计算直线距离
       if(requestParam.mode == 'straight'){        
         var locationsuccess = function (result) {
           var locationTo = Utils.getEndLocation(requestParam.to);//处理终点坐标
           var data = {
             message:"query ok",
             result:{
               elements:[]
             },
             status:0
           };
           for (var i = 0; i < locationTo.length; i++) {
             data.result.elements.push({//将坐标存入
               distance: Utils.getDistance(result.latitude, result.longitude, locationTo[i].lat, locationTo[i].lng),
               duration:0,
               from:{
                 lat: result.latitude,
                 lng:result.longitude
               },
               to:{
                 lat: locationTo[i].lat,
                 lng: locationTo[i].lng
               }
             });            
           }
           var calculateResult = data.result.elements;
           var distanceResult = [];
           for (var i = 0; i < calculateResult.length; i++) {
             distanceResult.push(calculateResult[i].distance);
           }  
           return options.success(data,{
             calculateResult: calculateResult,
             distanceResult: distanceResult
           });
         };
         
         Utils.locationProcess(options, locationsuccess);
       } else {
         var locationsuccess = function (result) {
           requestParam.from = result.latitude + ',' + result.longitude;
           if (options.sig) {
             requestParam.sig = Utils.getSig(requestParam, options.sig, 'calculateDistance');
           }
           wx.request(Utils.buildWxRequestConfig(options, {
             url: URL_DISTANCE,
             data: requestParam
           },'calculateDistance'));
         };

         Utils.locationProcess(options, locationsuccess);
       }      
   };

 /**
  * 路线规划：
  * 
  * @param {Object} options 接口参数对象
  * 
  * 请求参数结构可以参考
  * https://lbs.qq.com/webservice_v1/guide-road.html
  */
 direction(options) {
   var that = this;
   options = options || {};
   Utils.polyfillParam(options);

   if (Utils.checkParamKeyEmpty(options, 'to')) {
     return;
   }

   var requestParam = {
     output: 'json',
     key: that.key
   };

   //to格式处理
   if (typeof options.to == 'string') {
     requestParam.to = options.to;
   } else {
     requestParam.to = options.to.latitude + ',' + options.to.longitude;
   }
   //初始化局部请求域名
   var SET_URL_DIRECTION = null;
   //设置默认mode属性
   options.mode = options.mode || MODE.driving;

   //设置请求域名
   SET_URL_DIRECTION = URL_DIRECTION + options.mode;

   if (options.from) {
     options.location = options.from;
   }

   if (options.mode == MODE.driving) {
     if (options.from_poi) {
       requestParam.from_poi = options.from_poi;
     }
     if (options.heading) {
       requestParam.heading = options.heading;
     }
     if (options.speed) {
       requestParam.speed = options.speed;
     }
     if (options.accuracy) {
       requestParam.accuracy = options.accuracy;
     }
     if (options.road_type) {
       requestParam.road_type = options.road_type;
     }
     if (options.to_poi) {
       requestParam.to_poi = options.to_poi;
     }
     if (options.from_track) {
       requestParam.from_track = options.from_track;
     }
     if (options.waypoints) {
       requestParam.waypoints = options.waypoints;
     }
     if (options.policy) {
       requestParam.policy = options.policy;
     }
     if (options.plate_number) {
       requestParam.plate_number = options.plate_number;
     }
   }

   if (options.mode == MODE.transit) {
     if (options.departure_time) {
       requestParam.departure_time = options.departure_time;
     }
     if (options.policy) {
       requestParam.policy = options.policy;
     }
   } 

   var locationsuccess = function (result) {
     requestParam.from = result.latitude + ',' + result.longitude;
     if (options.sig) {
       requestParam.sig = Utils.getSig(requestParam, options.sig, 'direction',options.mode);
     }
     wx.request(Utils.buildWxRequestConfig(options, {
       url: SET_URL_DIRECTION,
       data: requestParam
     }, 'direction'));
   };

   Utils.locationProcess(options, locationsuccess);
 }
};

module.exports = QQMapWX;